Automatic call-bell clock.



' uh. 693,647.. T v Patentd Feb. 18; 1902.

AUTOMATIC CALL BELL BLOCK.

(Application'flled Sept. 5, 9

(llo Model.)

UNITE ATENT OFFICE.

AUTOMATIC CALL-BELL CLOCK.

SPECIFICATION forming part of Letters Patent No. 693,647, dated February18, 1902.

Application filed $eptember 5, 1901. $erial No. 74.351. (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM A. IIIRSCH- FIELD, a citizen of the UnitedStates, residing in the city and county of Philadelphia, State ofPennsylvania, have invented a new and useful Improvement in AutomaticGall-Bell forth, and particularly pointed out in the claims.

Figure 1 represents a front elevation of the clock device embodying myinvention. Fig. 2 represents a rear view thereof. Fig. 3 represents aside elevation showing a clock in connection with'a bell and battery.

Similar letters of reference indicate corresponding parts in thefigures.

Referring to the drawings, A designates a clock which may have the usualoperating mechanism, and B designates the dial or face thereof.

G designates the contact-points, which project forwardly from said 'dialbetween the center and periphery and are in communication with plates Don the rear of the dial, said plates having openings E therein.

F designates a bell, which is situated at any suitable point and whichis in communication with the battery G, which is connected with theclock A by the'wire or electric conductor H.

J designates a eonductor,which is connected with the bell F and hassecured thereto the plug K, which is adapted to be inserted in anopening in either of the plates D.

The hour-hand L has the point or brush M directly connected therewith,the same being adapted to contact with either of the points 0 in orderto form or close an electric circuit, as will be hereinafter more fullyexplained.

The operation is as follows: The device is applicable for use in hotelsfor calling occupants of rooms, or for class-rooms in schools, or forannouncing a particular time, and, for

example, if it is desired to call an occupant of a room at twelve oclockthe plug K is inserted in one of the openings E in the plate D beneaththe figure 12. When now the hour-hand L comes in contact with the pointC beneath the figure 12 acircuit is formed, which causes the ringing ofthe bell in said room, thus notifying the occupant thereof. It isevident that any number of bells may be operated in this manner and thatthe number of openings in the plates may be increased or reduced, asdesired, in order to cause the ringing of a single bell or the ringingof several bells at the same hour or time.

The points 0 and M constitute electrodes, it being noticed that thepoints C occupy openings in the face of an ordinary clock-dial betweenthe center and circumference thereof. The point M is directly on anordinary hand of the clock and is adapted to ride easily on and pasteither of the points 0.

It will of course be evident that various changes may be made by thoseskilled in the art which will come within the scope of my invention, andI do not therefore desire to be limited in every instance to the exactconstruction herein shown and described.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is j 1. In an automatic call-bell clock, adial, an alarm, a plug, a connection for said plug and alarm, electrodeson the front of said dial between the center and circumference, plateson the rear of said dial continuous of said elec- .trodes,each platebeing provided with an opening for the insertion of said plug, saidclock,

alarm and plug being in an electric circuit, and an electrode on thehand of said clock directly carried by the same.

2. In an automatic call-bell clock, a dial, an alarm, a plug, aconnection for said plug and alarm, electrodes on the front of saiddial, an electrode directly on the hand of the clock, and plates on therear of said dial connected with said electrodes, each of said plateshaving an opening for the insertion of said plug, said clock, alarm andplug being in an electric circuit.

3. In an automatic callbell clock, a dial, an alarm, a plug, aconnection for said plug and alarm, electrodes on the front of said dialbetween the center and circumference, plates on the rear of said dialconnected with said electrodes, each of said plates haviu g an openingfor the insertion of said plug, said clock, alarm and plug being in anelectric circuit, and an electrode carried directly by the minute-handof the clock.

4. In an automatic call-bell clock, a dial, an alarm, a plug, aconnection for said plug and 10 alarm, an electrode directly carried bythe hand of the'clock, and electrodes on the front of the dial betweenthe center and circumference thereof, and plates on the back of the dialhaving openings, said plates being connected with said electrodes, andsaid plug being adapted to be placed in either of said openings theclock, alarm and plug being in an electric circuit.

WILLIAM A. HIRSOHFIELD. Witnesses:

JOHN A. WIEDERSHEIM, ELLA LANE.

